$ git clone -n https://src.fedoraproject.org/rpms/rust-bit-set.git /var/lib/mock/f38-build-side-43-rust-devel-1410785-31421/root/chroot_tmpdir/scmroot/rust-bit-set
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410785-31421/root/chroot_tmpdir/scmroot/rust-bit-set'...
$ git fetch origin 49320e17e455e6f5a5b2ea74dfb5269ed1bf75c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bit-set
 * [new ref]         49320e17e455e6f5a5b2ea74dfb5269ed1bf75c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49320e1 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild