crosstool-ng download toolchain component tarball 'automake' failed - crosstool-ng

Question

I tried to ct-ng build the rpi3 config with Docker in MacOSX.
The version of crosstool-ng is 1.24.0
And there are error messages:
[INFO ] Performing some trivial sanity checks
[INFO ] Build started 20200508.202746
[INFO ] Building environment variables
[EXTRA] Preparing working directories
[EXTRA] Installing user-supplied crosstool-NG configuration
[EXTRA] =================================================================
[EXTRA] Dumping internal crosstool-NG configuration
[EXTRA] Building a toolchain for:
[EXTRA] build = x86_64-pc-linux-gnu
[EXTRA] host = x86_64-pc-linux-gnu
[EXTRA] target = armv8-rpi3ubuntu-linux-gnueabihf
[EXTRA] Dumping internal crosstool-NG configuration: done in 0.35s (at 00:04)
[INFO ] =================================================================
[INFO ] Retrieving needed toolchain components' tarballs
[ERROR] automake: download failed
[ERROR]
[ERROR] >>
[ERROR] >> Build failed in step 'Retrieving needed toolchain components' tarballs'
[ERROR] >> called in step '(top-level)'
[ERROR] >>
[ERROR] >> Error happened in: CT_Abort[scripts/functions#487]
[ERROR] >> called from: CT_DoFetch[scripts/functions#2103]
[ERROR] >> called from: CT_PackageRun[scripts/functions#2063]
[ERROR] >> called from: CT_Fetch[scripts/functions#2174]
[ERROR] >> called from: do_companion_tools_automake_get[scripts/build/companion_tools/300-automake.sh#5]
[ERROR] >> called from: do_companion_tools_get[scripts/build/companion_tools.sh#21]
[ERROR] >> called from: main[scripts/crosstool-NG.sh#646]
[ERROR] >>
[ERROR] >> For more info on this error, look at the file: 'build.log'
[ERROR] >> There is a list of known issues, some with workarounds, in:
[ERROR] >> https://crosstool-ng.github.io/docs/known-issues/
[ERROR] >>
[ERROR] >> If you feel this is a bug in crosstool-NG, report it at:
[ERROR] >> https://github.com/crosstool-ng/crosstool-ng/issues/
[ERROR] >>
[ERROR] >> Make sure your report includes all the information pertinent to this issue.
[ERROR] >> Read the bug reporting guidelines here:
[ERROR] >> http://crosstool-ng.github.io/support/
[ERROR]
[ERROR] (elapsed: 0:02.58)
[00:04] / /opt/crosstool-ng/bin/ct-ng:261: recipe for target 'build' failed
make: *** [build] Error 1
I checked the packages file in source of crosstool-ng crosstool-ng-1.24.0/packages/automake/
In package.desc:
repository='git https://git.savannah.gnu.org/git/automake.git'
bootstrap='./bootstrap'
mirrors='$(CT_Mirrors GNU automake)'
relevantpattern='1.*|.'
archive_formats='.tar.xz .tar.gz'
signature_format='packed/.sig'
Is it something wrong with the download url?
How is "download tarball" purpose?
Is it possible use tarball locally that I download it myself?
Thanks for your patience.