$ git clone -n https://src.fedoraproject.org/rpms/perl-LMDB_File.git /var/lib/mock/f45-build-24325-603/root/chroot_tmpdir/scmroot/perl-LMDB_File
Cloning into '/var/lib/mock/f45-build-24325-603/root/chroot_tmpdir/scmroot/perl-LMDB_File'...
$ git fetch origin 8ad7f58a948abc39e06d5cbc06afd20a35dd2bf3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-LMDB_File
 * [new ref]         8ad7f58a948abc39e06d5cbc06afd20a35dd2bf3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ad7f58 Perl 5.44 rebuild