$ git clone -n https://src.fedoraproject.org/rpms/rust-ahash.git /var/lib/mock/f45-build-40025-767/root/chroot_tmpdir/scmroot/rust-ahash
Cloning into '/var/lib/mock/f45-build-40025-767/root/chroot_tmpdir/scmroot/rust-ahash'...
$ git fetch origin 3417c055618525c381df82b83a0588ad822653f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ahash
 * [new ref]         3417c055618525c381df82b83a0588ad822653f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3417c05 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild