$ git clone -n https://gitee.com/src-opencloudos-rpms/gcc-toolset-15-gcc.git /var/lib/mock/dist-oc8-build-240494-82717/root/chroot_tmpdir/scmroot/gcc-toolset-15-gcc
Cloning into '/var/lib/mock/dist-oc8-build-240494-82717/root/chroot_tmpdir/scmroot/gcc-toolset-15-gcc'...
$ git fetch origin 8630d051e56c08ce4f4b63ec9a1a603e8dbb01c2:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/gcc-toolset-15-gcc
 * [new ref]         8630d051e56c08ce4f4b63ec9a1a603e8dbb01c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8630d05 import gcc-toolset-15-gcc-15.2.1-7.1.tl3