$ git clone -n https://src.fedoraproject.org/rpms/rust-procfs-core.git /var/lib/mock/f45-build-44040-810/root/chroot_tmpdir/scmroot/rust-procfs-core
Cloning into '/var/lib/mock/f45-build-44040-810/root/chroot_tmpdir/scmroot/rust-procfs-core'...
$ git fetch origin 2b44a76568356503a16e63cc9b1ccd8106056b30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-procfs-core
 * [new ref]         2b44a76568356503a16e63cc9b1ccd8106056b30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b44a76 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild