$ git clone -n https://src.fedoraproject.org/rpms/rust-argh_shared.git /var/lib/mock/f45-build-40123-768/root/chroot_tmpdir/scmroot/rust-argh_shared
Cloning into '/var/lib/mock/f45-build-40123-768/root/chroot_tmpdir/scmroot/rust-argh_shared'...
$ git fetch origin 93aaf0d439db6df19af2ce06e01379c9384594c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-argh_shared
 * [new ref]         93aaf0d439db6df19af2ce06e01379c9384594c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 93aaf0d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild