$ git clone -n https://src.fedoraproject.org/rpms/rust-regex-syntax0.6.git /var/lib/mock/f40-build-2039144-48245/root/chroot_tmpdir/scmroot/rust-regex-syntax0.6
Cloning into '/var/lib/mock/f40-build-2039144-48245/root/chroot_tmpdir/scmroot/rust-regex-syntax0.6'...
$ git fetch origin 5bcd3672f0d2f7d69a9a4b48329b6cd9fbd0eb0a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-regex-syntax0.6
 * [new ref]         5bcd3672f0d2f7d69a9a4b48329b6cd9fbd0eb0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bcd367 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild