$ git clone -n https://src.fedoraproject.org/rpms/rust-hdrhistogram.git /var/lib/mock/f40-build-2681214-67954/root/chroot_tmpdir/scmroot/rust-hdrhistogram
Cloning into '/var/lib/mock/f40-build-2681214-67954/root/chroot_tmpdir/scmroot/rust-hdrhistogram'...
$ git fetch origin 9a59c7639a3b2c9f7cc6fdcf539f075d79c93e3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hdrhistogram
 * [new ref]         9a59c7639a3b2c9f7cc6fdcf539f075d79c93e3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a59c76 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild