$ git clone -n https://gitee.com/mirrors/glibc_source.git /var/lib/mock/dist-an7_9-updates-build-120971-45851/root/chroot_tmpdir/scmroot/glibc_source
Cloning into '/var/lib/mock/dist-an7_9-updates-build-120971-45851/root/chroot_tmpdir/scmroot/glibc_source'...
$ git reset --hard b8cc607f3c1e8371b89158f427a61f28018604a5
Updating files:  63% (12156/19246)
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Updating files: 100% (19246/19246), done.
HEAD is now at b8cc607f3c Do not define static_assert or thread_local in headers for C2x