$ git clone -n https://src.fedoraproject.org/rpms/rust-sha-1.git /var/lib/mock/f40-build-2658032-66917/root/chroot_tmpdir/scmroot/rust-sha-1
Cloning into '/var/lib/mock/f40-build-2658032-66917/root/chroot_tmpdir/scmroot/rust-sha-1'...
$ git fetch origin 5bc949bb1fe79be73ee4c94dd3d8ad4eba35585d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sha-1
 * [new ref]         5bc949bb1fe79be73ee4c94dd3d8ad4eba35585d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bc949b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild