$ git clone -n https://src.fedoraproject.org/rpms/words.git /var/lib/mock/f41-build-726052-13125/root/chroot_tmpdir/scmroot/words
Cloning into '/var/lib/mock/f41-build-726052-13125/root/chroot_tmpdir/scmroot/words'...
$ git fetch origin 0f53a797cfbcec9b83c5679906a5d435210cbc7b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/words
 * [new ref]         0f53a797cfbcec9b83c5679906a5d435210cbc7b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f53a79 Eliminate use of obsolete %patchN syntax (#2283636)