$ git clone -n https://src.fedoraproject.org/rpms/libsecp256k1.git /var/lib/mock/f40-build-784861-133654/root/chroot_tmpdir/scmroot/libsecp256k1
Cloning into '/var/lib/mock/f40-build-784861-133654/root/chroot_tmpdir/scmroot/libsecp256k1'...
$ git fetch origin 7f3b87ae93eb8d03531f940cc181a950a9c70337:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsecp256k1
 * [new ref]         7f3b87ae93eb8d03531f940cc181a950a9c70337 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f3b87a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild