$ git clone -n https://src.fedoraproject.org/rpms/rust-cbc.git /var/lib/mock/f39-build-1543418-36560/root/chroot_tmpdir/scmroot/rust-cbc
Cloning into '/var/lib/mock/f39-build-1543418-36560/root/chroot_tmpdir/scmroot/rust-cbc'...
$ git fetch origin 7070d65a77da7a877439ff522b8eb9b455f3caa6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cbc
 * [new ref]         7070d65a77da7a877439ff522b8eb9b455f3caa6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7070d65 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild