$ git clone -n https://src.fedoraproject.org/rpms/efs-utils.git /var/lib/mock/f40-build-2209244-52150/root/chroot_tmpdir/scmroot/efs-utils
Cloning into '/var/lib/mock/f40-build-2209244-52150/root/chroot_tmpdir/scmroot/efs-utils'...
$ git fetch origin bdb91130f23d9f7db5897cf38e439dab480ae9df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/efs-utils
 * [new ref]         bdb91130f23d9f7db5897cf38e439dab480ae9df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdb9113 Rename SELinux types