$ git clone -n https://src.fedoraproject.org/rpms/rust-libm.git /var/lib/mock/f40-build-2652979-66897/root/chroot_tmpdir/scmroot/rust-libm
Cloning into '/var/lib/mock/f40-build-2652979-66897/root/chroot_tmpdir/scmroot/rust-libm'...
$ git fetch origin f81edec3754cedaea273487082cc01ad3c757773:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libm
 * [new ref]         f81edec3754cedaea273487082cc01ad3c757773 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f81edec Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild