$ git clone -n https://src.fedoraproject.org/rpms/rust-drop_bomb.git /var/lib/mock/f45-build-41395-782/root/chroot_tmpdir/scmroot/rust-drop_bomb
Cloning into '/var/lib/mock/f45-build-41395-782/root/chroot_tmpdir/scmroot/rust-drop_bomb'...
$ git fetch origin 5ead63dadcf0ba3efd510b707865d957ad8863ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-drop_bomb
 * [new ref]         5ead63dadcf0ba3efd510b707865d957ad8863ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ead63d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild