$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Unit-Runner-Xml.git /var/lib/mock/f41-build-723280-13111/root/chroot_tmpdir/scmroot/perl-Test-Unit-Runner-Xml
Cloning into '/var/lib/mock/f41-build-723280-13111/root/chroot_tmpdir/scmroot/perl-Test-Unit-Runner-Xml'...
$ git fetch origin 66c7116b1c875cee43322fa7f5bb895b79e8abf3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Unit-Runner-Xml
 * [new ref]         66c7116b1c875cee43322fa7f5bb895b79e8abf3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66c7116 Eliminate use of obsolete %patchN syntax (#2283636)