$ git clone -n https://src.fedoraproject.org/rpms/perl-CDB_File.git /var/lib/mock/f45-build-21901-588/root/chroot_tmpdir/scmroot/perl-CDB_File
Cloning into '/var/lib/mock/f45-build-21901-588/root/chroot_tmpdir/scmroot/perl-CDB_File'...
$ git fetch origin 696f41b27388d51462b79b044a641966204c38fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CDB_File
 * [new ref]         696f41b27388d51462b79b044a641966204c38fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 696f41b Perl 5.44 rebuild