$ git clone -n https://src.fedoraproject.org/rpms/rust-paris.git /var/lib/mock/f45-build-43721-805/root/chroot_tmpdir/scmroot/rust-paris
Cloning into '/var/lib/mock/f45-build-43721-805/root/chroot_tmpdir/scmroot/rust-paris'...
$ git fetch origin 58562bd5f0e09bd57635a625adb86ecd5ed7a788:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-paris
 * [new ref]         58562bd5f0e09bd57635a625adb86ecd5ed7a788 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58562bd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild