$ git clone -n https://src.fedoraproject.org/rpms/rust-tiny_http.git /var/lib/mock/f40-build-2643985-66493/root/chroot_tmpdir/scmroot/rust-tiny_http
Cloning into '/var/lib/mock/f40-build-2643985-66493/root/chroot_tmpdir/scmroot/rust-tiny_http'...
$ git fetch origin b4a6ab90aed59c8ea7d4ec4b9998ed4c49b8de12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tiny_http
 * [new ref]         b4a6ab90aed59c8ea7d4ec4b9998ed4c49b8de12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4a6ab9 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild