$ git clone -n https://src.fedoraproject.org/rpms/perl-DateTime-Format-DB2.git /var/lib/mock/f45-build-22951-595/root/chroot_tmpdir/scmroot/perl-DateTime-Format-DB2
Cloning into '/var/lib/mock/f45-build-22951-595/root/chroot_tmpdir/scmroot/perl-DateTime-Format-DB2'...
$ git fetch origin af92fed828d198e099896b544e107dbbf957df3b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DateTime-Format-DB2
 * [new ref]         af92fed828d198e099896b544e107dbbf957df3b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at af92fed Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild