$ git clone -n https://src.fedoraproject.org/rpms/perl-Time-HiRes.git /var/lib/mock/f45-build-27238-621/root/chroot_tmpdir/scmroot/perl-Time-HiRes
Cloning into '/var/lib/mock/f45-build-27238-621/root/chroot_tmpdir/scmroot/perl-Time-HiRes'...
$ git fetch origin 5de655f28773c58c3fc7b1719dca108758bf90d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Time-HiRes
 * [new ref]         5de655f28773c58c3fc7b1719dca108758bf90d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5de655f Increase release to favour standalone package