$ git clone -n https://src.fedoraproject.org/rpms/python-s3transfer.git /var/lib/mock/f40-build-1465633-23661/root/chroot_tmpdir/scmroot/python-s3transfer
Cloning into '/var/lib/mock/f40-build-1465633-23661/root/chroot_tmpdir/scmroot/python-s3transfer'...
$ git fetch origin e4e95f24c33e7dc78b2f7af78f7547981d3c46e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-s3transfer
 * [new ref]         e4e95f24c33e7dc78b2f7af78f7547981d3c46e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4e95f2 0.10.2