$ git clone -n https://src.fedoraproject.org/rpms/perl-Parse-ErrorString-Perl.git /var/lib/mock/f45-build-25671-612/root/chroot_tmpdir/scmroot/perl-Parse-ErrorString-Perl
Cloning into '/var/lib/mock/f45-build-25671-612/root/chroot_tmpdir/scmroot/perl-Parse-ErrorString-Perl'...
$ git fetch origin 47f2a00cd423c30464013683a3f8b0c5fec79802:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Parse-ErrorString-Perl
 * [new ref]         47f2a00cd423c30464013683a3f8b0c5fec79802 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47f2a00 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild