$ git clone -n https://gitee.com/mgb01105731/gcc-toolset-15-gcc.git /var/lib/mock/dist-an23-build-534297-81508/root/chroot_tmpdir/scmroot/gcc-toolset-15-gcc
Cloning into '/var/lib/mock/dist-an23-build-534297-81508/root/chroot_tmpdir/scmroot/gcc-toolset-15-gcc'...
$ git fetch origin 2b9c05a72391ccd8f0383fe68c2f31ad54ec373b:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/gcc-toolset-15-gcc
 * [new ref]         2b9c05a72391ccd8f0383fe68c2f31ad54ec373b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b9c05a Init