$ git clone -n https://src.fedoraproject.org/rpms/perl-Module-Metadata.git /var/lib/mock/f45-build-24901-607/root/chroot_tmpdir/scmroot/perl-Module-Metadata
Cloning into '/var/lib/mock/f45-build-24901-607/root/chroot_tmpdir/scmroot/perl-Module-Metadata'...
$ git fetch origin a64f57c8a71fa7db62bee14f2d68cea6757384e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Module-Metadata
 * [new ref]         a64f57c8a71fa7db62bee14f2d68cea6757384e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a64f57c Update to 1.000040