$ git clone -n https://src.fedoraproject.org/rpms/shadow-utils.git /var/lib/mock/f41-build-80-34/root/chroot_tmpdir/scmroot/shadow-utils
Cloning into '/var/lib/mock/f41-build-80-34/root/chroot_tmpdir/scmroot/shadow-utils'...
$ git fetch origin 39c1e07961334ffb76861182c2ac01967110cac5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shadow-utils
 * [new ref]         39c1e07961334ffb76861182c2ac01967110cac5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39c1e07 Prepare for bin-sbin merge