$ git clone -n https://src.fedoraproject.org/rpms/free42.git /var/lib/mock/f38-build-side-42-init-devel-711039-27244/root/chroot_tmpdir/scmroot/free42
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-711039-27244/root/chroot_tmpdir/scmroot/free42'...
$ git fetch origin ee576779312eac372637f773cbc1d1795ff16977:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/free42
 * [new ref]         ee576779312eac372637f773cbc1d1795ff16977 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee57677 Update to 3.0.18