$ git clone -n https://src.fedoraproject.org/rpms/rust-bit-set.git /var/lib/mock/f42-build-3252997-41225/root/chroot_tmpdir/scmroot/rust-bit-set
Cloning into '/var/lib/mock/f42-build-3252997-41225/root/chroot_tmpdir/scmroot/rust-bit-set'...
$ git fetch origin 400e74b75bd5bb31ffc07a45a1ec6e14e7bf8e74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bit-set
 * [new ref]         400e74b75bd5bb31ffc07a45a1ec6e14e7bf8e74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 400e74b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild