$ git clone -n https://src.fedoraproject.org/rpms/csmock.git /var/lib/mock/f39-build-1518313-35808/root/chroot_tmpdir/scmroot/csmock
Cloning into '/var/lib/mock/f39-build-1518313-35808/root/chroot_tmpdir/scmroot/csmock'...
$ git fetch origin 15087124772184b153475f171145b2aa35c729fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/csmock
 * [new ref]         15087124772184b153475f171145b2aa35c729fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1508712 update to latest upstream (3.5.0)