$ git clone -n https://src.fedoraproject.org/rpms/rust-argparse.git /var/lib/mock/f45-build-40120-768/root/chroot_tmpdir/scmroot/rust-argparse
Cloning into '/var/lib/mock/f45-build-40120-768/root/chroot_tmpdir/scmroot/rust-argparse'...
$ git fetch origin 8f3f0b9866f0398c2f282f42f8fb14b316db1c7c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-argparse
 * [new ref]         8f3f0b9866f0398c2f282f42f8fb14b316db1c7c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f3f0b9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild