$ git clone -n https://src.fedoraproject.org/rpms/rust-privdrop.git /var/lib/mock/f45-build-44023-809/root/chroot_tmpdir/scmroot/rust-privdrop
Cloning into '/var/lib/mock/f45-build-44023-809/root/chroot_tmpdir/scmroot/rust-privdrop'...
$ git fetch origin 5c7342abebe1c76a9d21e3dbb6b5e88dffe34a81:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-privdrop
 * [new ref]         5c7342abebe1c76a9d21e3dbb6b5e88dffe34a81 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c7342a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild