$ git clone -n https://src.fedoraproject.org/rpms/perl-Date-HolidayParser.git /var/lib/mock/f45-build-22939-595/root/chroot_tmpdir/scmroot/perl-Date-HolidayParser
Cloning into '/var/lib/mock/f45-build-22939-595/root/chroot_tmpdir/scmroot/perl-Date-HolidayParser'...
$ git fetch origin 8af4a5f06ce5f709df9dc56d13f559ad807e2db4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Date-HolidayParser
 * [new ref]         8af4a5f06ce5f709df9dc56d13f559ad807e2db4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8af4a5f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild