$ git clone -n https://src.fedoraproject.org/rpms/dracut.git /var/lib/mock/f42-build-3272640-41307/root/chroot_tmpdir/scmroot/dracut
Cloning into '/var/lib/mock/f42-build-3272640-41307/root/chroot_tmpdir/scmroot/dracut'...
$ git fetch origin 7910f5fb02bdb252b592927d3ce682767e344e69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dracut
 * [new ref]         7910f5fb02bdb252b592927d3ce682767e344e69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7910f5f Update to dracut 105