$ git clone -n https://src.fedoraproject.org/rpms/wine.git /var/lib/mock/f39-build-2529905-61806/root/chroot_tmpdir/scmroot/wine
Cloning into '/var/lib/mock/f39-build-2529905-61806/root/chroot_tmpdir/scmroot/wine'...
$ git fetch origin b6dbe710ac007feb968c471054f0235cc8ca01b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wine
 * [new ref]         b6dbe710ac007feb968c471054f0235cc8ca01b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6dbe71 Update to 9.1