$ git clone -n https://src.fedoraproject.org/rpms/libsolv.git /var/lib/mock/f42-build-side-1-3501256-45974/root/chroot_tmpdir/scmroot/libsolv
Cloning into '/var/lib/mock/f42-build-side-1-3501256-45974/root/chroot_tmpdir/scmroot/libsolv'...
$ git fetch origin d2623eeb3b9e14b63491890fb3997fc79bead191:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsolv
 * [new ref]         d2623eeb3b9e14b63491890fb3997fc79bead191 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2623ee Enable gating