$ git clone -n https://src.fedoraproject.org/rpms/rust-prefixdevname.git /var/lib/mock/f40-build-780979-131396/root/chroot_tmpdir/scmroot/rust-prefixdevname
Cloning into '/var/lib/mock/f40-build-780979-131396/root/chroot_tmpdir/scmroot/rust-prefixdevname'...
$ git fetch origin 1fe081b88a90de98cf348123cf6da34a8c509508:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-prefixdevname
 * [new ref]         1fe081b88a90de98cf348123cf6da34a8c509508 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fe081b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild