$ git clone -n https://src.fedoraproject.org/rpms/rust-yubibomb.git /var/lib/mock/f41-build-810604-146818/root/chroot_tmpdir/scmroot/rust-yubibomb
Cloning into '/var/lib/mock/f41-build-810604-146818/root/chroot_tmpdir/scmroot/rust-yubibomb'...
$ git fetch origin e22ffc1b4ad967643365604c704bd841327fd460:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-yubibomb
 * [new ref]         e22ffc1b4ad967643365604c704bd841327fd460 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e22ffc1 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces