$ git clone -n https://git.cclinux.org/stage/rpms/gdb.git /mnt/compose/mock/dist-circle9-build-105814-56399/root/chroot_tmpdir/scmroot/gdb
Cloning into '/mnt/compose/mock/dist-circle9-build-105814-56399/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin b15c04f5efa1148dd06caed91b94a8e5b1a2af89:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/gdb
 * [new ref]         b15c04f5efa1148dd06caed91b94a8e5b1a2af89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b15c04f import gdb-10.2-11.el9