$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-Handler-YAWriter.git /var/lib/mock/f45-build-27489-624/root/chroot_tmpdir/scmroot/perl-XML-Handler-YAWriter
Cloning into '/var/lib/mock/f45-build-27489-624/root/chroot_tmpdir/scmroot/perl-XML-Handler-YAWriter'...
$ git fetch origin 811fb7c9002cb939cf7caf5f3483f3cbf86075b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-Handler-YAWriter
 * [new ref]         811fb7c9002cb939cf7caf5f3483f3cbf86075b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 811fb7c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild