$ git clone -n https://src.fedoraproject.org/rpms/perl-MusicBrainz-DiscID.git /var/lib/mock/f45-build-25215-610/root/chroot_tmpdir/scmroot/perl-MusicBrainz-DiscID
Cloning into '/var/lib/mock/f45-build-25215-610/root/chroot_tmpdir/scmroot/perl-MusicBrainz-DiscID'...
$ git fetch origin 24f0eec0d27e6ab45856c61919f38f37aa0098b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-MusicBrainz-DiscID
 * [new ref]         24f0eec0d27e6ab45856c61919f38f37aa0098b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 24f0eec Perl 5.44 rebuild