$ git clone -n https://src.fedoraproject.org/rpms/ghc-xmonad-contrib.git /var/lib/mock/f40-build-743549-111265/root/chroot_tmpdir/scmroot/ghc-xmonad-contrib
Cloning into '/var/lib/mock/f40-build-743549-111265/root/chroot_tmpdir/scmroot/ghc-xmonad-contrib'...
$ git fetch origin 72b128db1d4810405a4cd1c537c66f5111b8689f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-xmonad-contrib
 * [new ref]         72b128db1d4810405a4cd1c537c66f5111b8689f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72b128d bump release