$ git clone -n https://src.fedoraproject.org/rpms/rust-mime.git /var/lib/mock/f40-build-2037948-48139/root/chroot_tmpdir/scmroot/rust-mime
Cloning into '/var/lib/mock/f40-build-2037948-48139/root/chroot_tmpdir/scmroot/rust-mime'...
$ git fetch origin 6aecdc7911e25261887787f5066ad728c8a4aac9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-mime
 * [new ref]         6aecdc7911e25261887787f5066ad728c8a4aac9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6aecdc7 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild