$ git clone -n https://src.fedoraproject.org/rpms/rust-scopeguard.git /var/lib/mock/f45-build-44713-816/root/chroot_tmpdir/scmroot/rust-scopeguard
Cloning into '/var/lib/mock/f45-build-44713-816/root/chroot_tmpdir/scmroot/rust-scopeguard'...
$ git fetch origin 6549eb596ab9178ac151b846f0289be18a5b92fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-scopeguard
 * [new ref]         6549eb596ab9178ac151b846f0289be18a5b92fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6549eb5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild