$ git clone -n https://src.fedoraproject.org/rpms/rust-helvum.git /var/lib/mock/f39-build-1526414-36063/root/chroot_tmpdir/scmroot/rust-helvum
Cloning into '/var/lib/mock/f39-build-1526414-36063/root/chroot_tmpdir/scmroot/rust-helvum'...
$ git fetch origin 4579cb27d249cc1bb94a0326bf1bc170a9eec516:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-helvum
 * [new ref]         4579cb27d249cc1bb94a0326bf1bc170a9eec516 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4579cb2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild