$ git clone -n https://src.fedoraproject.org/rpms/serd.git /var/lib/mock/f42-build-889229-188809/root/chroot_tmpdir/scmroot/serd
Cloning into '/var/lib/mock/f42-build-889229-188809/root/chroot_tmpdir/scmroot/serd'...
$ git fetch origin 75a3b66447a244392fa1dd5250a776b5fa118d35:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/serd
 * [new ref]         75a3b66447a244392fa1dd5250a776b5fa118d35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75a3b66 Update to 0.32.4