$ git clone -n https://src.fedoraproject.org/rpms/rust-duct.git /var/lib/mock/f39-build-1517034-35676/root/chroot_tmpdir/scmroot/rust-duct
Cloning into '/var/lib/mock/f39-build-1517034-35676/root/chroot_tmpdir/scmroot/rust-duct'...
$ git fetch origin 4cdac0863d70ecbf0972df8ab86502ec563eafec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-duct
 * [new ref]         4cdac0863d70ecbf0972df8ab86502ec563eafec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4cdac08 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild