$ git clone -n https://src.fedoraproject.org/rpms/rust-copydeps.git /var/lib/mock/f45-build-40972-778/root/chroot_tmpdir/scmroot/rust-copydeps
Cloning into '/var/lib/mock/f45-build-40972-778/root/chroot_tmpdir/scmroot/rust-copydeps'...
$ git fetch origin f79275f5b2ca7bb965526ab9a6b10077614b574b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-copydeps
 * [new ref]         f79275f5b2ca7bb965526ab9a6b10077614b574b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f79275f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild