$ git clone -n https://src.fedoraproject.org/rpms/perl-Makefile-DOM.git /var/lib/mock/f41-build-1194896-22267/root/chroot_tmpdir/scmroot/perl-Makefile-DOM
Cloning into '/var/lib/mock/f41-build-1194896-22267/root/chroot_tmpdir/scmroot/perl-Makefile-DOM'...
$ git fetch origin 6a33ecd32f383913f037703951640ca9f3d831d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Makefile-DOM
 * [new ref]         6a33ecd32f383913f037703951640ca9f3d831d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a33ecd Eliminate use of obsolete %patchN syntax (#2283636)