$ git clone -n https://src.fedoraproject.org/rpms/rust-md-5_0.9.git /var/lib/mock/f45-build-43166-800/root/chroot_tmpdir/scmroot/rust-md-5_0.9
Cloning into '/var/lib/mock/f45-build-43166-800/root/chroot_tmpdir/scmroot/rust-md-5_0.9'...
$ git fetch origin e6fc22519c56f558fe9c354f002d0c351cae42d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-md-5_0.9
 * [new ref]         e6fc22519c56f558fe9c354f002d0c351cae42d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6fc225 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild