$ git clone -n https://src.fedoraproject.org/rpms/perl-Date-Manip.git /var/lib/mock/f40-build-2201931-51862/root/chroot_tmpdir/scmroot/perl-Date-Manip
Cloning into '/var/lib/mock/f40-build-2201931-51862/root/chroot_tmpdir/scmroot/perl-Date-Manip'...
$ git fetch origin 104de1bf26a1a3b84c2342a92e272db18c3b4b90:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Date-Manip
 * [new ref]         104de1bf26a1a3b84c2342a92e272db18c3b4b90 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 104de1b Run tests in parallel