$ git clone -n https://src.fedoraproject.org/rpms/rust-pem.git /var/lib/mock/f40-build-2073527-49358/root/chroot_tmpdir/scmroot/rust-pem
Cloning into '/var/lib/mock/f40-build-2073527-49358/root/chroot_tmpdir/scmroot/rust-pem'...
$ git fetch origin b3361aa639ad3b325bc3f7c612b47e54c246768a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pem
 * [new ref]         b3361aa639ad3b325bc3f7c612b47e54c246768a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3361aa Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild