$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Unit-Runner-Xml.git /var/lib/mock/f45-build-26989-620/root/chroot_tmpdir/scmroot/perl-Test-Unit-Runner-Xml
Cloning into '/var/lib/mock/f45-build-26989-620/root/chroot_tmpdir/scmroot/perl-Test-Unit-Runner-Xml'...
$ git fetch origin 92af01626589203a4a70d594126f0641474c818d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Unit-Runner-Xml
 * [new ref]         92af01626589203a4a70d594126f0641474c818d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92af016 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild