$ git clone -n https://src.fedoraproject.org/rpms/dssi.git /var/lib/mock/f41-build-1072471-19725/root/chroot_tmpdir/scmroot/dssi
Cloning into '/var/lib/mock/f41-build-1072471-19725/root/chroot_tmpdir/scmroot/dssi'...
$ git fetch origin b7f5263dc6138473c1af437a1528acabeca22760:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dssi
 * [new ref]         b7f5263dc6138473c1af437a1528acabeca22760 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7f5263 Eliminate use of obsolete %patchN syntax (#2283636)