$ git clone -n https://src.fedoraproject.org/rpms/rust-b3sum.git /var/lib/mock/f41-build-819307-151605/root/chroot_tmpdir/scmroot/rust-b3sum
Cloning into '/var/lib/mock/f41-build-819307-151605/root/chroot_tmpdir/scmroot/rust-b3sum'...
$ git fetch origin d5c1b4fef068a2af2a00ce5b6d43709cf520aa49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-b3sum
 * [new ref]         d5c1b4fef068a2af2a00ce5b6d43709cf520aa49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d5c1b4f Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild