$ git clone -n https://src.fedoraproject.org/rpms/rust-tiny_http0.6.git /var/lib/mock/f41-build-2413613-25463/root/chroot_tmpdir/scmroot/rust-tiny_http0.6
Cloning into '/var/lib/mock/f41-build-2413613-25463/root/chroot_tmpdir/scmroot/rust-tiny_http0.6'...
$ git fetch origin 62ec65fe4d20e785a98bb54edada1c1153aeeea8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tiny_http0.6
 * [new ref]         62ec65fe4d20e785a98bb54edada1c1153aeeea8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62ec65f compat package no longer needed