$ git clone -n https://src.fedoraproject.org/rpms/mpvqt.git /var/lib/mock/f40-build-2220536-52660/root/chroot_tmpdir/scmroot/mpvqt
Cloning into '/var/lib/mock/f40-build-2220536-52660/root/chroot_tmpdir/scmroot/mpvqt'...
$ git fetch origin 3ac571011bd9670aac5e196c8d5bbc3e29d9cc2c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mpvqt
 * [new ref]         3ac571011bd9670aac5e196c8d5bbc3e29d9cc2c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ac5710 1.0.0