$ git clone -n https://src.fedoraproject.org/rpms/gsl-lite.git /var/lib/mock/f40-build-2669544-67261/root/chroot_tmpdir/scmroot/gsl-lite
Cloning into '/var/lib/mock/f40-build-2669544-67261/root/chroot_tmpdir/scmroot/gsl-lite'...
$ git fetch origin 7442a5dc92f11756561e427331d5a29c79e0df57:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gsl-lite
 * [new ref]         7442a5dc92f11756561e427331d5a29c79e0df57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7442a5d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild