$ git clone -n https://gitee.com/mgb01105731/gcc-toolset-15.git /var/lib/mock/dist-an23-build-532549-80970/root/chroot_tmpdir/scmroot/gcc-toolset-15
Cloning into '/var/lib/mock/dist-an23-build-532549-80970/root/chroot_tmpdir/scmroot/gcc-toolset-15'...
$ git fetch origin e71502560fceee90ebcbe4af349bba470d1fe5e5:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/gcc-toolset-15
 * [new ref]         e71502560fceee90ebcbe4af349bba470d1fe5e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e715025 init