$ git clone -n https://src.fedoraproject.org/rpms/crun.git /var/lib/mock/f38-build-side-42-init-devel-604315-26230/root/chroot_tmpdir/scmroot/crun
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-604315-26230/root/chroot_tmpdir/scmroot/crun'...
$ git fetch origin 2212cccd4b54a56c9bbcdecb4f78842752521e6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crun
 * [new ref]         2212cccd4b54a56c9bbcdecb4f78842752521e6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2212ccc update sources