$ git clone -n https://src.fedoraproject.org/rpms/rust-delharc.git /var/lib/mock/f45-build-41214-780/root/chroot_tmpdir/scmroot/rust-delharc
Cloning into '/var/lib/mock/f45-build-41214-780/root/chroot_tmpdir/scmroot/rust-delharc'...
$ git fetch origin 1fb8da3f3498df624d395aaaec9da4e9790d3096:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-delharc
 * [new ref]         1fb8da3f3498df624d395aaaec9da4e9790d3096 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fb8da3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild