$ git clone -n https://src.fedoraproject.org/rpms/rust-proctitle.git /var/lib/mock/f45-build-44042-810/root/chroot_tmpdir/scmroot/rust-proctitle
Cloning into '/var/lib/mock/f45-build-44042-810/root/chroot_tmpdir/scmroot/rust-proctitle'...
$ git fetch origin a66598dbb65b5d341a7d863288232d1f6a92c30a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-proctitle
 * [new ref]         a66598dbb65b5d341a7d863288232d1f6a92c30a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a66598d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild