$ git clone -n https://src.fedoraproject.org/rpms/initscripts.git /var/lib/mock/f42-build-867446-175505/root/chroot_tmpdir/scmroot/initscripts
Cloning into '/var/lib/mock/f42-build-867446-175505/root/chroot_tmpdir/scmroot/initscripts'...
$ git fetch origin 100c0bd722504039c5cb7e284f3ef6c937253fa0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/initscripts
 * [new ref]         100c0bd722504039c5cb7e284f3ef6c937253fa0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 100c0bd Rebuilt for the bin-sbin merge (2nd attempt)