$ git clone -n https://git.cclinux.org/stage/rpms/mcstrans.git /var/lib/mock/dist-circle9-build-120321-84997/root/chroot_tmpdir/scmroot/mcstrans
Cloning into '/var/lib/mock/dist-circle9-build-120321-84997/root/chroot_tmpdir/scmroot/mcstrans'...
$ git fetch origin 2e8757c782af38b71bb8ec7b5fcbf5b76368ed27:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/mcstrans
 * [new ref]         2e8757c782af38b71bb8ec7b5fcbf5b76368ed27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2e8757c import mcstrans-3.6-1.el9