$ git clone -n https://src.fedoraproject.org/rpms/rust-os-release.git /var/lib/mock/f40-build-2657610-66916/root/chroot_tmpdir/scmroot/rust-os-release
Cloning into '/var/lib/mock/f40-build-2657610-66916/root/chroot_tmpdir/scmroot/rust-os-release'...
$ git fetch origin 774ca6df6de75654cdf43c272f830bfca6b32dbf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-os-release
 * [new ref]         774ca6df6de75654cdf43c272f830bfca6b32dbf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 774ca6d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild