$ git clone -n https://src.fedoraproject.org/rpms/xkeyboard-config.git /var/lib/mock/f45-build-38928-730/root/chroot_tmpdir/scmroot/xkeyboard-config
Cloning into '/var/lib/mock/f45-build-38928-730/root/chroot_tmpdir/scmroot/xkeyboard-config'...
$ git fetch origin 76177a7b6e38f1fc78184b4ad286ccce1464cc22:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xkeyboard-config
 * [new ref]         76177a7b6e38f1fc78184b4ad286ccce1464cc22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76177a7 Convert to %autorelease and %autochangelog